Leap year years - time date, Nearly every four years is a leap year which has 366 days, as opposed to a common year, which has 365 in the gregorian calendar. leap years are needed to keep our. The julian calendar - tondering, What is the julian calendar? the julian calendar was introduced by julius caesar in 45 bc. it was in common use until the late 1500s, when countries started changing. Why leap year? - cnn, (cnn)happy leap day everyone! that's right, 2016 is a leap year, which means we get to enjoy a whole extra day of february, and people born on february 29.

Leap year | calendar | britannica., Leap year: year intercalary period, gregorian year 29th day february standard 28 days. astronomical year. https://www.britannica.com/science/leap-year-calendar The christian calendar | calendars, What roman calendar? julius caesar introduced julian calendar 45 ..., roman calendar mess, -called "knowledge. http://www.webexhibits.org/calendars/calendar-christian.html Julian date calendar - day year | vp calendar, Vp calendar unique day numbering scheme -leap years.. http://www.vpcalendar.net/Julian_Date.html